Home / 81,217.90-112,115.25-49,397.02

Finding the Fourth Proportional to 81,217.90, 112,115.25 and 49,397.02

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Solution

The fourth proportional to 81,217.90, 112,115.25 and 49,397.02 is: 68,188.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,217.90 : 112,115.25 = 49,397.02 : x
  2. Step 2: Convert to fraction form
    81,217.90/112,115.25 = 49,397.02/x
  3. Step 3: Cross multiply
    81,217.90x = 112,115.25 × 49,397.02
  4. Step 4: Simplify right side
    81,217.90x = 5,538,159,246.56
  5. Step 5: Solve for x
    x = 5,538,159,246.56/81,217.90
  6. Step 6: Final answer
    x = 68,188.90

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.